IN 1919, MARCEL TOLKOWSKY CHANGED DIAMONDS FOREVER. The Ideal Cut Diamond was born of academic study. Marcel Tolkowsky wanted to determine the precise proportions of a diamond’s cut to maximize its brilliance and dispersion of light. His studies proved that if a diamond was cut too shallow or too deep, light escaped from the bottom and sides, resulting in a loss of fire, sparkle and brilliance from the top. This led to the creation of the Ideal Cut diamond, prized for its ability to bring forth the fire and brilliance hidden in the heart of the diamond. The Ideal Cut remains the benchmark for industry excellence and the name Tolkowsky synonymous with unsurpassed excellence.

Established over 200 years, Tolkowsky is popularly regarded as the foremost name in the diamond industry. It is impossible to study diamonds as they exist today without paying homage to the name Tolkowsky. The family's passion, position, and ongoing pursuit of perfection are universally acknowledged.